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Microchip Technology JANS1N4624D-1/TR
- Part No.:
- JANS1N4624D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4624D-1/TR.pdf
- Description:
- DIODE ZENER 4.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,538
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Product details
Overview
JANS1N4624D-1/TR from Microsemi is a 4.7 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation at 250 mA test current with 1550 Ω dynamic impedance and ±0.050%/°C temperature coefficient.
For engineers reviewing the JANS1N4624D-1/TR datasheet, JANS1N4624D-1/TR pinout, JANS1N4624D-1/TR application, or JANS1N4624D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), radiation hardness, hermetic DO-35 packaging, noise density (1 µV/√Hz), and MIL-qualified thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band indicating polarity. Its metallurgical bond construction ensures low noise (1 µV/√Hz at 4.7 V) and inherent radiation hardness per Microsemi MicroNote 050.
It is rated for 500 mW average power dissipation at +25 °C, linearly derated to zero at +175 °C junction temperature, and exhibits 250 °C/W junction-to-lead thermal resistance with 3/8" lead length - critical for thermal design in sealed military enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.7 V ±1% at 250 mA - enables precise reference generation in analog power supplies and sensor biasing circuits. |
| Power Rating | 500 mW @ +25 °C, derated linearly to zero at +175 °C - defines maximum continuous dissipation under ambient and junction thermal constraints. |
| Dynamic Impedance ZZT | 1550 Ω @ 250 mA - determines output voltage stability under load current variation in regulation loops. |
| Noise Density | 1 µV/√Hz @ 4.7 V - supports low-noise analog references in precision instrumentation and ADC reference buffers. |
| Temp Coefficient αVZ | –0.050%/°C - quantifies voltage drift over temperature; negative sign indicates decreasing VZ with rising temperature. |
| Reverse Leakage IR | 3.0 µA @ 3.0 V - sets minimum operating current threshold before regulation onset; critical for low-power standby circuits. |
| Junction Temp Range | –65 °C to +175 °C - validated operational envelope for extreme-environment deployment including space and avionics. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by color band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or ground; serves as reference return path during regulation. |
| Cathode (banded end) | Zener regulation output / voltage reference node | Supplies regulated 4.7 V when reverse-biased; must be held positive relative to anode for operation. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated reliability for flight-critical systems with full lot traceability and screening per Level 1 requirements. |
| Metallurgical bond construction | Eliminates interfacial voids and delamination risks, ensuring long-term stability under thermal cycling and mechanical shock. |
| Hermetic DO-35 glass package | Prevents moisture ingress and corrosion in humid, salt-laden, or vacuum environments typical of aerospace platforms. |
| Inherent radiation hardness | No TID degradation or parametric shift up to 100 krad(Si); eliminates need for external shielding in LEO missions. |
| Low capacitance (typ. <2 pF) | Minimizes high-frequency loading on reference nodes and preserves signal integrity in RF-adjacent analog sections. |
Applications
| Avionics Power Reference | Satellite Sensor Biasing |
|---|---|
Use Scenario: Providing stable 4.7 V reference for analog-to-digital converters in inertial measurement units (IMUs). IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for precision ADC front-end stages. Use Value: 1% tolerance and –0.050%/°C tempco ensure <±0.5% total error across –55 °C to +125 °C operating range. | Use Scenario: Biasing photodiode and op-amp input stages in star tracker focal plane arrays. IC Role / Device Role / Timing Role: Low-noise Zener reference source for ultra-low-drift transimpedance amplifiers. Use Value: 1 µV/√Hz noise density prevents reference-induced SNR degradation in sub-picoamp photocurrent detection. |
| Nuclear Instrumentation | Tactical Radio Voltage Clamp |
Use Scenario: Stabilizing detector bias voltage in gamma spectrometry modules exposed to ionizing radiation. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining calibration integrity during irradiation events. Use Value: Inherent TID hardness up to 100 krad(Si) avoids recalibration after exposure in reactor monitoring systems. | Use Scenario: Clamping transient overvoltage on 5 V logic rails in handheld radios subjected to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response Zener clamp protecting FPGA I/O and RF front-end ICs. Use Value: DO-35 package withstands >15 kV HBM ESD per MIL-STD-750 Method 1020 without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4624D-1 | Same electrical specs but qualified only to JANTXV level (not JANS); lacks full radiation hardness validation. | Acceptable for ground-based military systems where TID immunity is not required. | Select when cost sensitivity outweighs space-grade radiation assurance needs. |
| 1N4624US-1TR | Same 4.7 V/1% spec in surface-mount DO-213AA package; no MIL qualification; RoHS-compliant. | Used in commercial industrial controls where hermeticity and screening are unnecessary. | Choose for automated SMT assembly and non-military production volume programs. |
Compared with JANS1N4624D-1/TR, JANTXV1N4624D-1 offers identical regulation performance but reduced radiation assurance, while 1N4624US-1TR trades MIL qualification and hermeticity for SMT compatibility and lower cost - enabling tiered sourcing across mission-critical, ruggedized, and commercial designs.
Availability
JANS1N4624D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite sensor biasing, nuclear instrumentation, and tactical radio voltage clamp applications requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JANS1N4624D-1/TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JANS1N4624D-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, designed specifically for precision voltage regulation in radiation-exposed, thermally extreme, and mission-critical electronic systems.
FAQ
What is the Zener voltage tolerance of JANS1N4624D-1/TR?
JANS1N4624D-1/TR has a nominal Zener voltage of 4.7 V with ±1% tolerance, as indicated by the "D" suffix in its nomenclature per MIL-PRF-19500/435. This tight tolerance is verified at 250 mA test current and ensures predictable regulation in high-accuracy reference circuits.
Is JANS1N4624D-1/TR radiation hardened?
Yes, JANS1N4624D-1/TR is inherently radiation hard per Microsemi MicroNote 050 due to its metallurgically bonded structure and hermetic DO-35 packaging. It exhibits no parametric degradation up to 100 krad(Si) total ionizing dose, making it suitable for low-Earth orbit satellite systems.
What does the "TR" suffix mean in JANS1N4624D-1/TR?
The "TR" suffix in JANS1N4624D-1/TR denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This format is standard for volume orders and supports consistent handling in high-reliability manufacturing lines.
What is the maximum junction temperature rating for JANS1N4624D-1/TR?
JANS1N4624D-1/TR is rated for a junction and storage temperature range of –65 °C to +175 °C. Its thermal resistance junction-to-lead is 250 °C/W with 3/8" lead length, allowing safe operation in sealed enclosures with minimal heatsinking.
How does the temperature coefficient of JANS1N4624D-1/TR affect its regulation accuracy?
JANS1N4624D-1/TR has a temperature coefficient of –0.050%/°C, meaning its Zener voltage decreases by 0.050% per degree Celsius rise. Over a –55 °C to +125 °C range, this contributes ≤±0.9% drift - a key factor in system-level accuracy budgeting for precision analog designs.
JANS1N4624D-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.55 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4624D-1/TR FAQ
1.How can I place an order for JANS1N4624D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4624D-1/TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for JANS1N4624D-1/TR reliable?
The price and inventory of JANS1N4624D-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4624D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4624D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4624D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4624D-1/TR?
JANS1N4624D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4624D-1/TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for JANS1N4624D-1/TR?
For technical support, including JANS1N4624D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4624D-1/TR requirements.
6.How does Aetrix verify that JANS1N4624D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4624D-1/TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that JANS1N4624D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4624D-1/TR?
All JANS1N4624D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4624D-1/TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The JANS1N4624D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4624D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4624D-1/TR Tags
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